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Title: Method of bistable optical information storage using antiferroelectric phase PLZT ceramics

Patent ·
OSTI ID:7013761

A method for bistable storage of binary optical information includes an antiferroelectric (AFE) lead lanthanum zirconate titanate (PLZT) layer having a stable antiferroelectric first phase and a ferroelectric (FE) second phase obtained by applying a switching electric field across the surface of the device. Optical information is stored by illuminating selected portions of the layer to photoactivate an FE to AFE transition in those portions. Erasure of the stored information is obtained by reapplying the switching field. 8 figs.

DOE Contract Number:
AC04-76DP00789
Assignee:
SNL; EDB-94-121041
Patent Number(s):
US 4945514; A
Application Number:
PPN: US 7-200104
OSTI ID:
7013761
Resource Relation:
Patent File Date: 31 May 1988
Country of Publication:
United States
Language:
English

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Related Subjects

99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
MEMORY DEVICES
DESIGN
OPTICAL COMPUTERS
OPTICAL EQUIPMENT
PLZT
COMPUTERS
EQUIPMENT
LANTHANUM COMPOUNDS
LEAD COMPOUNDS
OXYGEN COMPOUNDS
RARE EARTH COMPOUNDS
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ZIRCONATES
ZIRCONIUM COMPOUNDS
990200* - Mathematics & Computers